The invention discloses a method for improving wind power absorption ability of an electric power system through electricity-to-gas energy storage technology. The method comprises steps of predicting system load at the t period before the day and wind power output at the t period before the day; by taking the principle that the wind power obtained through the prediction is absorbed in a minimal wind abandon mode by the system, setting a calling scheme I for optimizing the wind power absorption ability; and judging whether to translate load participation, solve translatable load, require an electricity-to-gas energy storage device to work and start an electricity-gas energy storage. According to the invention, parts of wind and electricity can be absorbed through the electricity-to-gas device when the wind power output is too big; impacts on the electric power system are reduced; obtained man-made natural gas can be directly stored and transported in a natural gas system; requirements on energy storage cells are reduced; and energy storage cost is reduced. On the other hand, the natural gas can provide a part of heat load, so pressure of a thermal power plant is reduced.